Brainstem encoding accuracy declines with age only for modulated tones
Evidence
The top row of Fig. 6 shows that increasing age was associated with decreasing stimulus encoding accuracy, but only for the modulated tone stimulus (r = ‑0.53, p < 0.001). The middle row of Fig. 6 also shows a striking relationship between increased TFS sensitivity and reduced stimulus encoding for the complex harmonic tone (r = ‑0.56, p = 0.004). Interestingly, there was no such relationship for the modulated tone. There were also no significant relationships between stimulus encoding accuracy and the speech in noise scores (bottom row). — Dijk, Pim van, Physiology, Psychoacoustics and…, 4157
The maximum cross-correlation value obtained from each participant and stimulus type was correlated with age, the TFS sensitivity and speech in noise scores. The top row of Fig. 6 shows that increasing age was associated with decreasing stimulus encoding accuracy, but only for the modulated tone stimulus (r = ‑0.53, p < 0.001). The middle row of Fig. 6 also shows a striking relationship between increased TFS sensitivity and reduced stimulus encoding for the complex harmonic tone (r = ‑0.56, p = 0.004). Interestingly, there was no such relationship for the modulated tone. There were also no significant relationships between stimulus encoding accuracy and the speech in noise scores (bottom row). — Dijk, Pim van, Physiology, Psychoacoustics and…, 4207
3.4 Correlations: Stimulus Encoding Accuracy with Age, TFS Sensitivity and QuickSIN The maximum cross-correlation value obtained from each participant and stimulus type was correlated with age, the TFS sensitivity and speech in noise scores. The top row of Fig. 6 shows that increasing age was associated with decreasing stimulus encoding accuracy, but only for the modulated tone stimulus (r = ‑0.53, p < 0.001). The middle row of Fig. 6 also shows a striking relationship between increased TFS sensitivity and reduced stimulus encoding for the complex harmonic tone (r = ‑0.56, p = 0.004). Interestingly, there was no such relationship for the modulated tone. There were also no significant relationships between stimulus encoding accuracy and the speech in noise scores (bottom row). — Dijk, Pim van, Physiology, Psychoacoustics and…, 4187
Categorization
- QUESTION: Why would age affect envelope-following responses to a modulated carrier but not encoding of a complex harmonic tone? The stimulus-dependent selectivity is unexplained and worth chasing.
- corroborated: 6 independent passages support this claim — Dijk, Pim van, Physiology, Psychoacoustics and…, 4157; Dijk, Pim van, Physiology, Psychoacoustics and…, 4207; Dijk, Pim van, Physiology, Psychoacoustics and…, 4187
- XREF: connects to: Better speech-in-noise ability correlated with worse brainstem encoding — Dijk, Pim van, Physiology, Psychoacoustics and…, 4216; Temporal-structure sensitivity declines with age even when audiograms remain normal. — Dijk, Pim van, Physiology, Psychoacoustics and…, 793
Broader Connections
- Temporal-structure sensitivity declines with age even when audiograms remain normal.
#expands(0.80) — Dijk, Pim van, Physiology, Psychoacoustics and…, 793